CN221646697U - A buffer hinge for a downward-flipping door - Google Patents

Abstract

The utility model discloses a down-turned door buffering hinge which is characterized by comprising a hinge body, wherein the hinge body comprises a hinge fixing plate, a hinge linkage piece and a door plate connecting plate which are connected in a hinged mode, a buffering assembly matched with the hinge linkage piece is arranged on the inner side of the hinge fixing plate, the buffering assembly comprises a buffering guide rod and a buffering elastic structure sleeved on the buffering guide rod, the hinge linkage piece is connected with the hinge fixing piece matched with the buffering guide rod, buffering pressing parts positioned on the front side and the rear side of the buffering guide rod are arranged on the hinge linkage piece and the hinge fixing piece, and the lower end of the buffering pressing part is in abutting connection with the upper end of the buffering elastic structure. The damping mechanism has the advantages of reducing the size of the buffer hinge, facilitating installation and fixation, keeping the force application direction of the damping mechanism stable, ensuring the stability of the door body mounting plate in the rotation process, and facilitating smooth opening and closing of the door body of the household appliance.

Description

A buffer hinge for a downward-flipping door

Technical Field

The utility model relates to the technical field of hinges, in particular to a buffer hinge for a downward-flipping door.

Background Art

At present, a Chinese patent with announcement number CN 215485429 U discloses a down-flip door buffer hinge, which includes a hinge main body fixing plate installed vertically, a door panel mounting plate, and the buffer hinge also includes a buffer device arranged between the door panel mounting plate and the hinge main body fixing plate. The buffer device includes a hinge linkage connecting member connecting the door panel mounting plate and the hinge main body fixing plate, and a damping mechanism for pulling the hinge linkage connecting member to make the door panel open and close and hover. A guide slide for controlling the opening and closing and hovering of the door panel is provided on the chain main body fixing plate. The hinge linkage connecting member of the down-flip door buffer hinge of the utility model drives the door panel to automatically close in the closing slide of the guide slide, and can hover in the hovering slide. The automatic closing angle and the door panel hovering opening angle can be set as needed. In the opening slide, the door panel automatically opens to the maximum under the action of its own gravity, so it is easy to use and has high work efficiency.

The damping mechanism in the patent is a tension spring, one end of which is fixedly connected to the hinge body fixing plate, and the other end is connected to the top of the hinge linkage connector. This requires a large space on the hinge body fixing plate to place the tension spring so that it has enough space for stretching, resulting in a large volume of the buffer hinge, which affects the installation and fixation on the household appliance. At the same time, the tension spring directly pulls the hinge linkage connector to swing, but the force direction of the tension spring is constantly changing due to the action of the hinge linkage connector during the pulling process, causing the door body installation plate to vibrate or get stuck easily during the rotation process, thereby affecting the smooth opening and closing of the door body of the household appliance.

Utility Model Content

In view of the shortcomings of the prior art, the utility model provides a downward-flipping door buffer hinge, which has the advantages of reducing the volume of the buffer hinge to facilitate installation and fixation, and keeping the force direction of the damping mechanism stable, thereby ensuring the stability of the rotation process of the door body mounting plate and facilitating the smooth opening and closing of the door body of household appliances.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a downward-flipping door buffer hinge, comprising a hinge body, the hinge body comprising a hinge fixing plate, a hinge linkage and a door panel connecting plate which are hingedly connected to each other, a buffer component adapted to the hinge linkage is arranged on the inner side of the hinge fixing plate, the buffer component comprises a buffer guide rod and a buffer elastic structure sleeved on the buffer guide rod, the hinge linkage is connected to a hinge fixing member adapted thereto, the hinge linkage and the hinge fixing member are provided with buffer pressing parts located on the front and rear sides of the buffer guide rod, the lower end of the buffer pressing part and the upper end of the buffer elastic structure are pressed against each other.

By adopting the above technical scheme, the buffer component is arranged on the inner side of the hinge fixing plate, which effectively reduces the size of the hinge fixing plate while ensuring the stable and reliable operation of the buffer component, thereby facilitating the installation and fixation of the hinge body on the door body of the household appliance, and reducing the production cost of the hinge body. The buffer elastic structure is sleeved on the buffer guide rod to ensure that the direction of the buffer elastic structure remains stable when force is applied, thereby ensuring the stability of the movement when the hinge linkage moves up and down, preventing the door body mounting plate from vibrating or getting stuck during rotation, and improving the smoothness of the opening and closing of the door body of the household appliance.

The utility model is further configured as follows: the buffer elastic structure includes a buffer spring and buffer pressure blocks located at the upper and lower ends of the buffer spring, the buffer pressure blocks are sleeved on the buffer guide rod and are movably connected to each other, one end of the buffer pressure block is provided with two buffer pressure grooves adapted to the buffer pressing part, the bottom of the buffer pressure groove and the lower end surface of the buffer pressing part are both transitioned in a circular arc manner, and the other end of the buffer pressure block is provided with a pressure block step adapted to the buffer spring.

By adopting the above technical solution, a buffer pressure block is provided to facilitate mutual force between the buffer pressing part and the buffer spring, and the buffer pressing groove facilitates the buffer pressure block and the buffer pressing part to be subjected to force, thereby ensuring the stability of the force applied by the buffer component and further ensuring the smooth opening and closing of the door of the household appliance.

The utility model is further configured as follows: the hinge linkage and the hinge fixing plate are respectively provided with corresponding guide slides and roller structures, the guide slide comprises a closing slide, a hovering slide and an opening slide connected in sequence, a positioning groove matched with the hinge fixing plate is provided on one side of the hinge linkage, and a positioning column matched with the positioning groove is provided on the hinge fixing plate.

By adopting the above technical scheme, the hinge linkage moves with the household appliance door body. When the roller structure is in the closing slide groove of the guide slide, the household appliance door body is in a closed state. When the roller structure is in the hovering slide groove, the household appliance door body is in a hovering state, and the hovering angle can be freely adjusted. When the roller structure is in the opening slide groove, the household appliance door body is in an open state, and cooperates with the positioning groove and the positioning column to prevent the household appliance door body from being damaged due to excessive opening angle.

The utility model is further configured as follows: the roller structure includes a roller block and a rolling rod inserted on the roller block, the roller block is inserted on the hinge fixing plate and is hingedly connected to each other, the roller block is provided with a roller protrusion matched with the hinge fixing plate, the end of the rolling rod is provided with a limiting protrusion matched with the roller protrusion, the roller protrusion is provided with a limiting step, and the head portion on the rolling rod and the roller block are clamped on the front and rear sides of the guide slide.

By adopting the above technical solution, the roller structure cooperates with the roller block and the rolling rod, so that the roller structure can move up and down in the guide slide, while ensuring that the hinge linkage will not be separated from the roller structure, ensuring the reliability of the hinge linkage movement, and thus ensuring the smooth opening and closing of the household appliance door.

The utility model is further configured as follows: a guide slider is sandwiched between the hinge linkage member and the hinge fixing plate, and a guide protrusion is provided on the guide slider which is integral with the guide slider, and the guide protrusion passes through the hinge linkage member and the hinge fixing member.

By adopting the above technical solution, a guide slider is clamped between the hinge linkage and the hinge fixing plate to ensure that the distance between the hinge linkage and the buffer pressing part on the hinge fixing part and the hinge fixing plate remains stable when they move up and down, thereby improving the reliability of the buffer jaw movement.

The utility model is further configured as follows: the upper and lower ends of the buffer guide rod pass through the hinge fixing plate and are fixedly connected to each other by setting a fixing nut, the upper and lower ends of the hinge fixing plate are respectively provided with an upper fixing edge and a lower fixing edge which are integral therewith, and the upper fixing plate and the lower fixing plate are respectively provided with an upper mounting through hole and a lower mounting through hole which are adapted to the buffer guide rod.

By adopting the above technical solution, the upper and lower ends of the buffer guide rod are connected to the hinge fixing plate through fixing nuts, thereby ensuring the stability of the buffer guide rod structure and further ensuring the reliability of the action of the buffer assembly.

The utility model is further configured as follows: the hinge linkage is also provided with a sliding block hingedly connected thereto, the sliding block is provided with a sliding groove and is slidably connected to one side of the hinge fixing plate, the hinge fixing plate is provided with a sliding edge integral therewith, and the sliding edge is provided with a sliding strip adapted to the sliding groove.

By adopting the above technical solution, the sliding block and the sliding bar on the sliding edge cooperate with each other, so that the hinge linkage can move up and down stably through the sliding block, ensuring the stability and reliability of the hinge linkage movement, and thus ensuring the smooth opening and closing of the household appliance door.

In summary, the utility model has the following beneficial effects:

1. The buffer component is arranged on the inner side of the hinge fixing plate, which effectively reduces the size of the hinge fixing plate while ensuring the stable and reliable action of the buffer component, thereby facilitating the installation and fixation of the hinge body on the door body of the household appliance, and also reducing the production cost of the hinge body. The buffer elastic structure is sleeved on the buffer guide rod to ensure that the direction of the buffer elastic structure remains stable when the force is applied, thereby ensuring the stability of the action when the hinge linkage moves up and down, preventing the door body installation plate from vibrating or getting stuck during the rotation process, and improving the smoothness of the opening and closing of the door body of the household appliance;

2. By providing a buffer pressure block, it is convenient for the buffer pressing part and the buffer spring to apply force to each other. The buffer pressing groove facilitates the force on the buffer pressure block and the buffer pressing part, thereby ensuring the stability of the force applied by the buffer component, thereby ensuring the smooth opening and closing of the door body of the household appliance; a guide slider is clamped between the hinge linkage and the hinge fixing plate to ensure that the distance between the buffer pressing part on the hinge linkage and the hinge fixing part and the hinge fixing plate remains stable when moving up and down, thereby improving the reliability of the action of the buffer jaw part; the upper and lower ends of the buffer guide rod are connected to the hinge fixing plate by fixing nuts to ensure the stability of the buffer guide rod structure, thereby ensuring the reliability of the action of the buffer component.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the closed state of the utility model.

FIG. 2 is a schematic diagram of the utility model in the open state.

FIG. 3 is a schematic cross-sectional view of the roller structure in FIG. 2 .

FIG. 4 is a schematic cross-sectional view of the guide slider in FIG. 2 .

FIG5 is a schematic diagram of the explosion state of the utility model.

1. The hinge fixing plate; 11. The roller structure; 111. The roller block; 1111. The roller protrusion; 1112. The limiting step; 112. The rolling rod; 1121. The limiting protrusion; 12. The positioning column; 13. The upper fixed edge; 14. The lower fixed edge; 15. The sliding edge; 151. The sliding bar; 2. The hinge linkage; 21. The buffer pressing part; 22. The guide slide; 221. The closing slide; 222. The hovering slide; 223. The opening slide; 23. The positioning groove; 24. The guide slider; 241. The guide protrusion; 25. The sliding block; 251. The sliding groove; 3. The door panel connecting plate; 4. The buffer assembly; 41. The buffer guide rod; 411. The fixing nut; 42. The buffer spring; 43. The buffer pressure block; 431. The buffer pressure groove; 432. The pressure block step; 5. The hinge fixing part.

DETAILED DESCRIPTION

The utility model is further described in detail below in conjunction with the accompanying drawings.

The present embodiment discloses a downward flip door buffer hinge, as shown in Figures 1 to 5, including a hinge body, the hinge body including a hinge fixing plate 1, a hinge linkage 2 and a door panel connecting plate 3 which are hingedly connected to each other, a buffer component 4 adapted to the hinge linkage 2 is arranged on the inner side of the hinge fixing plate 1, the buffer component 4 includes a buffer guide rod 41 and a buffer elastic structure sleeved on the buffer guide rod 41, the hinge linkage 2 is connected to a hinge fixing member 5 adapted thereto, the hinge linkage 2 and the hinge fixing member 5 are provided with a buffer pressing portion 21 located on the front and rear sides of the buffer guide rod 41, the buffer pressing portion 21 is located on the front and rear sides of the buffer guide rod 41, to ensure that the buffer elastic structure is evenly stressed during the pressing process Unbalanced force on one side may cause the hinge body to vibrate or get stuck during use, and the lower end of the buffer pressing part 21 and the upper end of the buffer elastic structure are pressed against each other; the buffer component 4 is arranged on the inner side of the hinge fixing plate 1, which effectively reduces the size of the hinge fixing plate 1 while ensuring that the buffer component 4 operates stably and reliably, thereby facilitating the installation and fixation of the hinge body on the door body of household appliances, and reducing the production cost of the hinge body, and the buffer elastic structure is sleeved on the buffer guide rod 41 to ensure that the direction of the buffer elastic structure remains stable when force is applied, thereby ensuring the stability of the movement of the hinge linkage 2 when it moves up and down, preventing the door body mounting plate from vibrating or getting stuck during rotation, and improving the smoothness of the opening and closing of the door body of household appliances.

Here, the hinge fixing member 5 and the hinge linkage member 2 may be a separate structure or an integrated structure.

The buffer elastic structure includes a buffer spring 42 and a buffer pressure block 43 located at the upper and lower ends of the buffer spring 42. The buffer pressure block 43 is sleeved on the buffer guide rod 41 and movably connected to each other. One end of the buffer pressure block 43 is provided with two buffer pressure grooves 431 adapted to the buffer pressing part 21. The bottom of the buffer pressure groove 431 and the lower end surface of the buffer pressing part 21 are both transitioned in a circular arc manner. The other end of the buffer pressure block 43 is provided with a pressure block step 432 adapted to the buffer spring 42. The buffer pressure block 43 is provided to facilitate the mutual force between the buffer pressing part 21 and the buffer spring 42. The buffer pressing groove facilitates the force on the buffer pressure block 43 and the buffer pressing part 21, thereby ensuring the stability of the force applied by the buffer component 4 and further ensuring the smooth opening and closing of the door body of the household appliance.

The contact points between the hinge linkage 2 and the hinge fixing member 5 and the buffer pressing block 43 include but are not limited to two points, and may also be multiple points, thereby ensuring that the buffer pressing block 43 cooperates with the buffer spring 42 to move up and down stably.

The hinge linkage 2 and the hinge fixing plate 1 are respectively provided with corresponding guide slides 22 and roller structures 11, the guide slide 22 includes a closing slide 221, a hovering slide 222 and an opening slide 223 connected in sequence, a positioning groove 23 adapted to the hinge fixing plate 1 is provided on one side of the hinge linkage 2, and a positioning column 12 adapted to the positioning groove 23 is provided on the hinge fixing plate 1; the hinge linkage 2 moves with the household appliance door body, when the roller structure 11 is in the closing slide 221 of the guide slide 22, the household appliance door body is in a closed state, when the roller structure 11 is in the hovering slide 222, the household appliance door body is in a hovering state, and the hovering angle can be freely adjusted, when the roller structure 11 is in the opening slide 223, the household appliance door body is in an open state, and cooperates with the positioning groove 23 and the positioning column 12 to prevent the household appliance door body from being damaged due to excessive opening angle.

The roller structure 11 includes a roller block 111 and a rolling rod 112 inserted on the roller block 111. The roller block 111 is inserted on the hinge fixing plate 1 and is hingedly connected to each other. The roller block 111 is provided with a roller protrusion 1111 adapted to the hinge fixing plate 1, and the end of the rolling rod 112 is provided with a limiting protrusion 1121 adapted to the roller protrusion 1111. A limiting step 1112 is provided on the roller protrusion 1111, and the head of the rolling rod 112 is clamped on the front and rear sides of the guide slide 22 with the roller block 111; the roller structure 11 cooperates with the roller block 111 and the rolling rod 112, so that the roller structure 11 can move up and down in the guide slide 22, while ensuring that the hinge linkage 2 will not be separated from the roller structure 11, ensuring the reliability of the action of the hinge linkage 2, and then ensuring the smooth opening and closing of the door of the household appliance.

A guide slider 24 is sandwiched between the hinge linkage 2 and the hinge fixing plate 1, and a guide protrusion 241 is provided on the guide slider 24, which is integral with the guide protrusion 241, and the guide protrusion 241 passes through the hinge linkage 2 and the hinge fixing member 5; the guide slider 24 is sandwiched between the hinge linkage 2 and the hinge fixing plate 1 to ensure that the distance between the buffer pressing part 21 on the hinge linkage 2 and the hinge fixing member 5 and the hinge fixing plate 1 remains stable when they move up and down, thereby improving the reliability of the buffer jaw movement.

The upper and lower ends of the buffer guide rod 41 pass through the hinge fixing plate 1 and are fixedly connected to each other by setting a fixing nut 411. The upper and lower ends of the hinge fixing plate 1 are respectively provided with an upper fixing edge 13 and a lower fixing edge 14 which are integrated therewith. The upper fixing plate and the lower fixing plate are respectively provided with an upper mounting through hole and a lower mounting through hole which are compatible with the buffer guide rod 41; the upper and lower ends of the buffer guide rod 41 are connected to the hinge fixing plate 1 by a fixing nut 411, so as to ensure the stability of the structure of the buffer guide rod 41 and further ensure the reliability of the action of the buffer assembly 4.

The hinge linkage 2 is also provided with a sliding block 25 hingedly connected thereto, the sliding block 25 is provided with a sliding groove 251 and is slidably connected to one side of the hinge fixing plate 1, the hinge fixing plate 1 is provided with a sliding edge 15 which is integral therewith, and the sliding edge 15 is provided with a sliding bar 151 which is adapted to the sliding groove 251; the sliding block 25 and the sliding bar 151 on the sliding edge 15 cooperate with each other, so that the hinge linkage 2 can move up and down stably through the sliding block 25, thereby ensuring the stable and reliable movement of the hinge linkage 2, and further ensuring the smooth opening and closing of the door of the household appliance.

The overall structure of the hinge body can also be set as a mirror image of the above technical solution, so that the hinge body is connected to the left and right sides of the door body of the household appliance, thereby ensuring the stability of the structure.

The working process is as follows: when the door of the household appliance is opened, the door panel connecting plate 3 drives the hinge linkage 2 to move downward, so that the guide slide 22 on the hinge linkage moves downward along the roller structure 11, and then the roller structure 11 moves from the closing slide groove 221 to the hovering slide groove 222, and the door of the household appliance is in a hovering state, and then the roller structure 11 moves to the opening slide groove 223 until the positioning groove 23 and the positioning column 12 are mutually engaged and the opening is completed. At the same time, during the opening process, the buffer pressing part 21 on the hinge linkage and the hinge fixing part 5 is pressed on the buffer elastic structure of the buffer assembly 4, so that it is continuously compressed, and the force of opening the door of the household appliance is converted into elastic potential energy for storage;

When closing, the household appliance door is pulled to disengage its roller structure 11 from the closing slot 221, and then the buffer elastic structure in the buffer assembly 4 is reset, thereby driving the buffer pressing part 21 pressed on the top to lift up, that is, driving the hinge linkage 2 to move upward, and the hinge linkage 2 drives the door panel connecting plate 3 to rotate and then drives the household appliance door to complete the closing action.

In summary, the utility model has the following beneficial effects:

1. The buffer component 4 is arranged on the inner side of the hinge fixing plate 1, and the size of the hinge fixing plate 1 is effectively reduced while ensuring the stable and reliable action of the buffer component 4, thereby facilitating the installation and fixation of the hinge body on the door body of the household appliance, and also reducing the production cost of the hinge body. The buffer elastic structure is sleeved on the buffer guide rod 41, ensuring that the direction of the buffer elastic structure remains stable when the force is applied, thereby ensuring the stability of the action when the hinge linkage 2 moves up and down, preventing the door body mounting plate from vibrating or getting stuck during the rotation process, and improving the smoothness of the opening and closing of the door body of the household appliance;

2. By setting the buffer pressure block 43, it is convenient for the buffer pressing part 21 and the buffer spring 42 to apply force to each other. The buffer pressing groove facilitates the buffer pressure block 43 and the buffer pressing part 21 to be subjected to force, thereby ensuring the stability of the force applied by the buffer component 4, and further ensuring the smooth opening and closing of the door body of the household appliance; a guide slider 24 is clamped between the hinge linkage 2 and the hinge fixing plate 1 to ensure that the distance between the buffer pressing part 21 on the hinge linkage 2 and the hinge fixing part 5 and the hinge fixing plate 1 remains stable when they move up and down, thereby improving the reliability of the action of the buffer jaw part; the upper and lower ends of the buffer guide rod 41 are connected to the hinge fixing plate 1 by fixing nuts 411 to ensure the stability of the buffer guide rod 41 structure, and further ensure the reliability of the action of the buffer component 4.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A buffer hinge for a flip-down door, comprising a hinge body, the hinge body comprising a hinge fixing plate (1), a hinge linkage (2) and a door panel connecting plate (3) which are hingedly connected to each other, characterized in that: a buffer assembly (4) adapted to the hinge linkage (2) is arranged on the inner side of the hinge fixing plate (1), the buffer assembly (4) comprises a buffer guide rod (41) and a buffer elastic structure sleeved on the buffer guide rod (41), the hinge linkage (2) is connected to a hinge fixing member (5) adapted thereto, the hinge linkage (2) and the hinge fixing member (5) are provided with buffer pressing portions (21) located at the front and rear sides of the buffer guide rod (41), and the lower end of the buffer pressing portion (21) and the upper end of the buffer elastic structure are pressed against each other. 2. A downward flip door buffer hinge according to claim 1, characterized in that: the buffer elastic structure includes a buffer spring (42) and a buffer pressure block (43) located at the upper and lower ends of the buffer spring (42), the buffer pressure block (43) is sleeved on the buffer guide rod (41) and is movably connected to each other, one end of the buffer pressure block (43) is provided with two buffer pressure grooves (431) adapted to the buffer pressing part (21), the bottom of the buffer pressure groove (431) and the lower end surface of the buffer pressing part (21) are both transitioned in a circular arc manner, and the other end of the buffer pressure block (43) is provided with a pressure block step (432) adapted to the buffer spring (42). 3. A downward flip door buffer hinge according to claim 2, characterized in that: the hinge linkage (2) and the hinge fixing plate (1) are respectively provided with corresponding guide slides (22) and roller structures (11), the guide slide (22) includes a closing slide (221), a hovering slide (222) and an opening slide (223) connected in sequence, a positioning groove (23) matched with the hinge fixing plate (1) is provided on one side of the hinge linkage (2), and a positioning column (12) matched with the positioning groove (23) is provided on the hinge fixing plate (1). 4. A downward flip door buffer hinge according to claim 3, characterized in that: the roller structure (11) includes a roller block (111) and a rolling rod (112) inserted into the roller block (111), the roller block (111) is inserted into the hinge fixing plate (1) and is hingedly connected to each other, the roller block (111) is provided with a roller protrusion (1111) adapted to the hinge fixing plate (1), the end of the rolling rod (112) is provided with a limiting protrusion (1121) adapted to the roller protrusion (1111), a limiting step (1112) is provided on the roller protrusion (1111), and the head of the rolling rod (112) and the roller block (111) are clamped on the front and rear sides of the guide slide (22). 5. A downward flip door buffer hinge according to claim 4, characterized in that: a guide slider (24) is sandwiched between the hinge linkage (2) and the hinge fixing plate (1), and the guide slider (24) is provided with a guide protrusion (241) integral therewith, and the guide protrusion (241) passes through the hinge linkage (2) and the hinge fixing member (5). 6. A downward-flipping door buffer hinge according to claim 5, characterized in that: the upper and lower ends of the buffer guide rod (41) pass through the hinge fixing plate (1) and are fixedly connected to each other by setting a fixing nut (411), and the upper and lower ends of the hinge fixing plate (1) are respectively provided with an upper fixing edge (13) and a lower fixing edge (14) integral therewith, and the upper fixing plate and the lower fixing plate are respectively provided with an upper mounting through hole and a lower mounting through hole adapted to the buffer guide rod (41). 7. A downward flip door buffer hinge according to claim 6, characterized in that: the hinge linkage member (2) is also provided with a sliding block (25) hingedly connected thereto, the sliding block (25) is provided with a sliding groove (251) and is slidably connected to one side of the hinge fixing plate (1), the hinge fixing plate (1) is provided with a sliding edge (15) integral with it, and the sliding edge (15) is provided with a sliding bar (151) adapted to the sliding groove (251).